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Electrical equipment in an office takes a current of 13A from a 240V supply.
Estimate the cost per week of electricity if the equipment is used for 30 hours every week and 1kWh of energy costs 13.56p
An electric heater consumes 3.6MJ when LINKED to a 250V supply for 40 minutes.
Find the power rating of the heater and the current taken from the supply
The Trigger In particle physics, a trigger is a system which uses easy criteria to rapidly decide that events within a particle detector to remain while only a small fraction o
Give any two methods of electric lines of force. Sketch them for an isolated positive point charge.
torque
What is proton-neutron hypothesis? Explain it?
Photon flux
why can one ignore quantization of charge when dealing with macroscopic charges
One of the Maxwell's e-m equations involves the curl of the electric field. Write down the equation and mention the law of electromagnetism which is shown by the equation.
A uniform spring of length 2m and mass 200gm is under a tension of 800N. Find the speed of transverse wave in the string.
A metal has a work function of 4.80 eV. Will ultraviolet radiation with a wave length of 385 nm be able to eject a photoelectron from the metal?
In plane transmission grating the width of the each slit is same to half of the opaque portion. Which order of spectra will be absent?
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